Optical recording method and apparatus with different recording rates

Abstract

An optical recording method and apparatus with different recording rates are provided for effectively increasing the average recording rate. The optical recording method includes the steps of: controlling a recording rate with a constant linear velocity (CLV) control mode; recording data; judging whether the recording rate has to be increased according to a rotating speed of a spindle motor or a recording position; and performing a process for changing the rotating speed if the recording rate is increased, and continuing recording data at the same recording rate if the recording rate is not increased. The step for changing the rotating speed includes the steps of: pausing recording data; registering a paused zone of a disc; determining a new rotating speed of the spindle motor, and driving the spindle motor at the new rotating speed; and linking recording zones to continue recording data at a new recording rate from the paused zone, when the rotating speed of the spindle motor is stable. Consequently, the invention can optimize the overall average recording rate by effectively utilizing the maximum rotating speed of the spindle motor in conjunction with the maximum recording rate.

1. An optical recording method, comprising:
 recording data at a recording rate within a constant linear velocity (CLV) control mode; 
 determining whether a rotating speed of a spindle motor is a critical speed or less, a predetermined maximum speed, or between the critical speed and the predetermined maximum speed; and 
 performing a process to change the rotating speed when the rotating speed is less than or equal to the critical speed or equal to the predetermined maximum speed, and continuing recording data at the recording rate when the rotating speed is between the critical speed and the maximum speed. 
 
   
   
     2. The optical recording method according to  claim 1 , wherein the process for changing the rotating speed comprises:
 pausing recording data; 
 registering a paused zone of a disc; 
 determining a new rotating speed of the spindle motor, and driving the spindle motor at the new rotating speed; and 
 continuing to record data at a new recording rate from the paused zone. 
 
   
   
     3. The optical recording method according to  claim 2 , wherein the step of determining the new rotating speed of the spindle motor comprises obtaining the new rotating speed from a look-up table according to the paused zone. 
   
   
     4. An optical recording method, comprising the steps of:
 recording data at a recording rate within a constant angle velocity (CAV) control mode; 
 determining whether the control mode has to be changed to a constant linear velocity (CLV) control mode according to a recording rate or a recording position; and 
 changing to the CLV control mode when the recording rate reaches a maximum recording rate, and continuing recording data at the constant angle velocity if the control mode does not change to the CLV control mode. 
 
   
   
     5. The optical recording method according to  claim 4 , wherein the process for changing the control mode comprises the steps of:
 pausing recording data; 
 registering a paused zone of a disc; 
 determining a new rotating speed of the spindle motor, and driving the spindle motor at the new rotating speed; and 
 continuing to record data under a CLV control mode from the paused zone. 
 
   
   
     6. The optical recording method according to  claim 5 , wherein the recording rate is controlled with the CLV control mode when the recording rate reaches a maximum recording rate. 
   
   
     7. The optical recording method according to  claim 5 , wherein in the step of determining the new rotating speed of the spindle motor, a linear velocity at which data recording is used as the linear velocity of the CLV control mode. 
   
   
     8. The optical recording method according to  claim 4 , wherein a rotating speed of a spindle motor is constant in the CAV control mode. 
   
   
     9. The optical recording method according to  claim 8 , wherein the rotating speed is a maximum rotating speed in the CAV control mode. 
   
   
     10. The optical recording method according to  claim 4 , wherein the recording rate is constant in the CLV control mode. 
   
   
     11. The optical recording method according to  claim 10 , wherein, in the CLV control mode, the recording rate is the maximum recording rate. 
   
   
     12. The optical recording method according to  claim 1 , wherein the recording rate is constant. 
   
   
     13. The optical recording method according to  claim 1 , wherein the rotating speed is a first constant speed in a first position along a radius of an optical disk on which the data is recorded, and the rotating speed is a second constant speed in a second position along the radius of the optical disk. 
   
   
     14. The optical recording method according to  claim 13 , wherein the rotating speed is a third constant speed in a third position along the radius of the optical disk. 
   
   
     15. The optical recording method according to  claim 14 , wherein the rotating speed is a fourth constant speed in a fourth position along the radius of the optical disk. 
   
   
     16. The optical recording method according to  claim 14 , wherein the recording rate does not exceed a predetermined maximum recording rate. 
   
   
     17. The optical recording method according to  claim 13 , wherein the recording rate does not exceed a predetermined maximum recording rate. 
   
   
     18. The optical recording method according to  claim 1 , wherein the recording rate does not exceed a predetermined maximum recording rate.